CN107762404A - Swing offset formula low clearance rig - Google Patents
Swing offset formula low clearance rig Download PDFInfo
- Publication number
- CN107762404A CN107762404A CN201610699859.5A CN201610699859A CN107762404A CN 107762404 A CN107762404 A CN 107762404A CN 201610699859 A CN201610699859 A CN 201610699859A CN 107762404 A CN107762404 A CN 107762404A
- Authority
- CN
- China
- Prior art keywords
- column
- portal frame
- drill bit
- low clearance
- drill rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 4
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 11
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A kind of swing offset formula low clearance rig, the drilling mechanism being connected including walking mechanism, with walking mechanism, drilling mechanism includes portal frame, telescopic drill rod, unit head, drill bit, sliding block, short set, locking mechanism, telescopic drill rod upper end is sheathed in unit head, unit head is fixed in short set bottom and drives telescopic drill rod to rotate, and the first column of short set and portal frame is hinged；The drill bit and sliding block are detachably connected, and the second column of sliding block and portal frame coordinates realization to slide up and down；First column is provided with to limit the locking mechanism that short set rocks.Swing offset formula low clearance rig of the present invention is in the state of height-limited, rotated forward around gantry pillar by telescopic drill rod or back rotation is come vacating space height, drill bit is set to leave ground, realization is fetched earth, unloads soil, is realized and is bored within deep more than 30 meters, 0.5 2 meters of footpath of brill in the limited height in underground.
Description
Technical field
The invention belongs to underground engineering construction fields such as urban rail transit construction, tunnel construction, city piping lane construction, specifically relate to
A kind of and underground engineering pile foundation pore-forming swing offset formula low clearance rig.
Background technology
Existing track traffic, subway work, there is one during the underground engineering construction such as construction, city piping lane construction in tunnel
Very big problem：Hole pile driving construction, i.e., in hole bashfully lower piling.Domestic Zhuan Gong manufacturing enterprises do not have a equipment can be in hole
The rig inside driven piles downwards, crucial obstruction are the limitation of height.The demand of domestic hole pile driving construction is 4.5 generally all in height
Rice is following, and stake needs to reach 20-30 rice deeply, and stake footpath requires 1-1.8 rice.The rig design thinking limitation that foreign countries release at present, no
The requirement deep to stake footpath, stake of domestic underground engineering, such as two rig that Italian matt company releases can be met, wherein a
Highly it is 5.4 meters, bores deep only 16 meters, it is only 0.8 meter to bore footpath；Another money is highly 3.8 meters, bores deep only 12 meters, bores footpath only
For 0.6 meter, and two rig is expensive, up to millions of RMB.
In view of this, the present inventor is based on practical experience and professional knowledge for many years, and coordinates the application of scientific principle, to create
If a kind of new swing offset formula low clearance rig, disclosure satisfy that the requirement of current underground engineering pile foundation pore-forming.
The content of the invention
It is an object of the invention to provide a kind of swing offset formula low clearance rig, technical problem to be solved is to make it
Under (not limited to this) height limitation of 4.5 meters of underground, in hole or under the low clearance state such as bridge, house, depth is drilled down into
Reach more than 30 meters, bore diameter reaches 0.5-2 rice, thus more suitable for practicality.
The object of the invention to solve the technical problems is realized using following technical scheme.According to proposed by the present invention
A kind of swing offset formula low clearance rig, including walking mechanism, the drilling mechanism 1 that is connected with walking mechanism, the drilling mechanism 1 wrap
Include portal frame 11, telescopic drill rod 12, unit head 13, drill bit 14, sliding block 15, locking mechanism 16, short set 17, the upper end of telescopic drill rod 12
It is sheathed in unit head 13, unit head 13 is fixed in 17 bottoms of short set and drives telescopic drill rod 12 to rotate, short set 17 and portal frame
11 the first column 111 is be hinged；Drill bit 14 and sliding block 15 are detachably connected, the second column 112 of sliding block 15 and portal frame 11
Realization is coordinated to slide up and down；First column 111 is provided with to limit the locking mechanism 16 that short set 17 rocks.
The object of the invention to solve the technical problems is also further realized using following technical scheme.
Foregoing swing offset formula low clearance rig, the walking mechanism use wheeled or crawler type or walking.
Foregoing swing offset formula low clearance rig, the unit head 13 are connected by the power station on pipeline and walking mechanism
Connect, driving power first 13 carries out forward and reverse rotation.
Foregoing swing offset formula low clearance rig, the column 111 of telescopic drill rod 11 and first are be hinged by hinge 18.
Foregoing swing offset formula low clearance rig, first column 111 be portal frame 11 left column, the second column
112 be the right column of portal frame 11.
Foregoing swing offset formula low clearance rig, first column 111 be portal frame 11 right column, the second column
112 be the left column of portal frame 11.
Foregoing swing offset formula low clearance rig, the drill bit 14 are snapped down to the bottom of the second column 112 by sliding block 15
When, the short drive of set 17 unit head 13, telescopic drill rod 12 are rotated to above drill bit 14 around the first column 111, and short set 17 is by locked
Mechanism 16 is spacing, and the inner tube lower end of telescopic drill rod 12 and drill bit 14 are detachably connected；Sliding block 15 disconnects with drill bit 14.
By above-mentioned technical proposal, swing offset formula low clearance rig proposed by the present invention in the state of height-limited,
Rotated forward around gantry pillar by telescopic drill rod or back rotation is come vacating space height, drill bit is left ground
Face, realization are fetched earth, unload soil, are realized in the limited height in underground and are bored deep more than 30 meters, brill footpath 0.5-2 rice.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Figure 1A is the drilling schematic diagram of swing offset formula low clearance rig of the present invention.
Figure 1B to 1C is that swing offset formula low clearance rig of the present invention unloads native schematic diagram.
A:Ground 1：Drilling mechanism
11：Portal frame 111：First column 112：Second column
12：Telescopic drill rod 13：Unit head
14：Drill bit 15：Sliding block
16：Locking mechanism 17：Short set
18：Hinge
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to swing offset formula low clearance rig proposed by the present invention its embodiment, structure, spy
Sign and its effect, describe in detail as after.
Referring to Fig. 1, swing offset formula low clearance rig of the present invention includes walking mechanism (figure does not illustrate) and walking mechanism
The drilling mechanism 1 of connection, drilling mechanism 1 include portal frame 11, telescopic drill rod 12, unit head 13, drill bit 14, sliding block 15, locked
Mechanism 16, short set 17, the upper end of telescopic drill rod 12 is sheathed in unit head 13, and unit head 13, which is fixed in 17 bottoms of short set and driven, to be stretched
Contracting drilling rod 12 rotates, and the first column 111 of short set 17 and portal frame 11 is be hinged；Drill bit 14 and sliding block 15 are detachably connected, sliding
Second column 112 of block 15 and portal frame 11 coordinates realization to slide up and down；First column 111 is provided with locking mechanism 16.
Further, the walking mechanism uses wheeled or crawler type or walking, but the invention is not restricted to this, user can
Other modes are selected according to geological conditions.
Further, the short column 111 of set 17 and first is be hinged by hinge 18.In Mechanical Driven, hydraulic-driven or people
When power driving, short set 17 drives unit head 13, telescopic drill rod 12 is rotated forward around the first column 111 or back rotation.
Further, when drill bit 14 is snapped down to the second 112 bottom of column by sliding block 15, short set 17 drives telescopic drill rod
12nd, unit head 13 is rotated to above drill bit 14 around the first column 111, and locking mechanism 16 ensures the 17 spacing fixations of short set
Telescopic drill rod 12 can not rock, and ensure that drill bit 14 is smoothly drilled down into
Specifically, the locking mechanism 16 is removably connected with hinge 18 by bearing pin., will be locked by bearing pin before drilling
Mechanism 16, hinge 18 are affixed, and limitation telescopic drill rod 12 rocks；When unloading soil, extract bearing pin and separate locking mechanism 16, hinge 18,
Short set 17 drives unit head 13, telescopic drill rod 12 to be rotated around the first column.
Specifically, the first column 111 is located at the front of left column (after or for the left column and telescopic drill rod 12 of portal frame 11
Side), the second column 112 is the right column of portal frame 11.Stood when drill bit 14 is snapped down to the right side of portal frame 11 by the auxiliary of sliding block 15
The bottom of post, and when submerging in advance in the hole dug, it is short to cover 17 and drive unit heads 13, telescopic drill rod 12 to be revolved backward around left column
Turn (or rotating forward) to the top of drill bit 14, short set 17 is spacing by locking mechanism 16, and the inner tube lower end of telescopic drill rod 12 is with boring
First 14 upper end is detachably connected, then drill bit 14 and sliding block 15 are disconnected, and starts unit head 13 and is crept into.
Specifically, the first column 111 is located at the front of right column (after or for the right column and telescopic drill rod 12 of portal frame 11
Side), the second column 112 is the left column of portal frame 11.Stood when drill bit 14 is snapped down to the left side of portal frame 11 by the auxiliary of sliding block 15
The bottom of post, and when submerging in advance in the hole dug, it is short to cover 17 and drive unit heads 13, telescopic drill rod 12 to be revolved backward around left column
Turn (or rotating forward) to the top of drill bit 14, short set 17 is spacing by locking mechanism 16, and the inner tube lower end of telescopic drill rod 12 is with boring
First 14 upper end is detachably connected, then drill bit 14 and sliding block 15 are disconnected, and starts unit head 13 and is crept into.
Further, the drill bit 14 can use reaming bit, rotary digging drill bit, but the invention is not restricted to this, user can root
Other drill bits are selected according to geological conditions.
Further, the unit head 13 is connected by pipeline with the power station in walking mechanism, and driving power first 13 is carried out
Forward and reverse rotation, can be hydraulic-driven, air pressure driving, Mechanical Driven, the invention is not restricted to this.
The operation principle of swing offset formula low clearance rig of the present invention is as follows：
Rig is opened to construction area by walking mechanism first, starts assembling drilling according to geographical conditions and into hole site
Mechanism 1, drill bit 14 is slidably arranged on the column of portal frame 11 by sliding block 15, short set 17 and the another of portal frame 11 are stood
Column articulated, telescopic drill rod 22 is located at the front of portal frame 11 (or rear).Then dig out in advance similar in one and the height of drill bit 14
Hole, drill bit 14 glide under the auxiliary of sliding block 15 along the column of portal frame 11, and when submerging in the hole dug out, short set 17 drives dynamic
Power is first 13, telescopic drill rod 12 above another column back rotation (or rotating forward) to the drill bit 14 of portal frame 11, it is short to cover 17
Spacing by locking mechanism 16, the inner tube lower end of telescopic drill rod 12 is connected with the upper end of drill bit 14, then by drill bit 14 and sliding block 15
Disconnect, initial position is slided on sliding block 15.Then unit head 13 is started, telescopic drill rod 12, drill bit 14 are to deeper inside rotary drilling.
Drill bit 14 need to be only carried when unloading soil to close to ground A, first connect drill bit 14, sliding block 15, then by telescopic drill rod 12
Inner tube lower end is disconnected with drill bit 14, is then turned off locking mechanism 16, and the short drive of set 17 telescopic drill rods 12 rotate forward (or to be revolved backward
Turn) to non-stake holes region, space is conceded for drill bit 14, drill bit 14 is slided to more than ground A by sliding block 15 along the second column 112
Carry out unloading soil.Drill bit 14 is snapped down in stake holes by sliding block 15 along the second column 112 after the completion of unloading soil, and short set 17 drives flexible bore
The back rotation of bar 12 (or forward rotate) is first spacing by locking mechanism 16 by short set 17 to stake holes region, then by telescopic drill rod
12 inner tube lower ends are connected with drill bit 14, and drill bit 14 and sliding block 15 are disconnected, and are started unit head 13 and are continued to creep into.
Swing offset formula low clearance rig proposed by the present invention has been successfully applied in multiple cities such as ten No. six lines of Beijing Metro
In the underground engineering construction in city, and bore it is deep can reach more than 30 meters, drilling can reach within more than 0.5 meter 2 meters, suitable
Domestic and international market demand.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the invention, for this hair
For bright those skilled in the art, every improvement made by using description of the invention and accompanying drawing content, similarly wrap
Include in the scope of patent protection of the present invention.
Claims (7)
- A kind of 1. swing offset formula low clearance rig, it is characterised in that：The boring machine being connected including walking mechanism, with walking mechanism Structure (1), the drilling mechanism (1) include portal frame (11), telescopic drill rod (12), unit head (13), drill bit (14), sliding block (15), Locking mechanism (16), short set (17), telescopic drill rod (12) upper end are sheathed in unit head (13), and unit head (13) is fixed in short set (17) bottom and telescopic drill rod (12) is driven to rotate, the first column (111) of short set (17) and portal frame (11) is be hinged；Drill bit (14) detachably connected with sliding block (15), the second column (112) of sliding block (15) and portal frame (11) coordinates to glide in realization It is dynamic；First column (111) is provided with to limit the locking mechanism (16) that short set (17) is rocked.
- 2. swing offset formula low clearance rig according to claim 1, it is characterised in that：The walking mechanism is using wheeled Or crawler type or walking.
- 3. swing offset formula low clearance rig according to claim 1, it is characterised in that：The unit head (13) passes through pipe Line is connected with the power station in walking mechanism, and driving power head (13) carries out forward and reverse rotation.
- 4. swing offset formula low clearance rig according to claim 1, it is characterised in that：The telescopic drill rod (11) and the One column (111) is be hinged by hinge (18).
- 5. swing offset formula low clearance rig according to claim 1, it is characterised in that：First column (111) is The left column of portal frame (11), the second column (112) are the right column of portal frame (11).
- 6. swing offset formula low clearance rig according to claim 1, it is characterised in that：First column (111) is The right column of portal frame (11), the second column (112) are the left column of portal frame (11).
- 7. the swing offset formula low clearance rig according to claim 5 or 6, it is characterised in that：The drill bit (14) passes through When sliding block (15) is snapped down to the second column (112) bottom, short set (17) drives unit head (13), telescopic drill rod (12) vertical around first Above post (111) rotation to drill bit (14), short set (17) is spacing by locking mechanism (16), the inner tube lower end of telescopic drill rod (12) It is detachably connected with drill bit (14)；Sliding block (15) disconnects with drill bit (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699859.5A CN107762404B (en) | 2016-08-22 | 2016-08-22 | Rotary displacement type low-clearance drilling machine for underground engineering hole pile construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699859.5A CN107762404B (en) | 2016-08-22 | 2016-08-22 | Rotary displacement type low-clearance drilling machine for underground engineering hole pile construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762404A true CN107762404A (en) | 2018-03-06 |
| CN107762404B CN107762404B (en) | 2020-02-28 |
Family
ID=61263540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610699859.5A Expired - Fee Related CN107762404B (en) | 2016-08-22 | 2016-08-22 | Rotary displacement type low-clearance drilling machine for underground engineering hole pile construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762404B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7900003A (en) * | 1979-01-02 | 1980-05-30 | Poot Simon | Earth drill fitment on tractor chassis - is via vertical column on which frame moves vertically or transverse, frame having laterally projecting horizontal feet |
| CN102900360A (en) * | 2011-07-28 | 2013-01-30 | 华北电网有限公司 | Combined type digging and drilling machine |
| CN203685019U (en) * | 2013-12-14 | 2014-07-02 | 河南省三力机械制造有限公司 | Long spiral drilling machine |
| CN203742441U (en) * | 2014-01-20 | 2014-07-30 | 龙工(上海)机械制造有限公司 | Rotary drilling jig with changeable mast |
| CN104929516A (en) * | 2015-06-24 | 2015-09-23 | 赵现红 | Horizontal moving type rock drilling static blasting machine |
| CN205025388U (en) * | 2015-10-12 | 2016-02-10 | 武汉市天宝工程机械有限责任公司 | Take dark stake stirring rig of disconnect drilling rod device |
| CN105625940A (en) * | 2015-04-10 | 2016-06-01 | 重庆宏工工程机械有限责任公司 | Drilling and piling integrated machine |
-
2016
- 2016-08-22 CN CN201610699859.5A patent/CN107762404B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7900003A (en) * | 1979-01-02 | 1980-05-30 | Poot Simon | Earth drill fitment on tractor chassis - is via vertical column on which frame moves vertically or transverse, frame having laterally projecting horizontal feet |
| CN102900360A (en) * | 2011-07-28 | 2013-01-30 | 华北电网有限公司 | Combined type digging and drilling machine |
| CN203685019U (en) * | 2013-12-14 | 2014-07-02 | 河南省三力机械制造有限公司 | Long spiral drilling machine |
| CN203742441U (en) * | 2014-01-20 | 2014-07-30 | 龙工(上海)机械制造有限公司 | Rotary drilling jig with changeable mast |
| CN105625940A (en) * | 2015-04-10 | 2016-06-01 | 重庆宏工工程机械有限责任公司 | Drilling and piling integrated machine |
| CN104929516A (en) * | 2015-06-24 | 2015-09-23 | 赵现红 | Horizontal moving type rock drilling static blasting machine |
| CN205025388U (en) * | 2015-10-12 | 2016-02-10 | 武汉市天宝工程机械有限责任公司 | Take dark stake stirring rig of disconnect drilling rod device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107762404B (en) | 2020-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103046637B (en) | Pipe-jacking construction method utilizing pipeline augering | |
| CN109519188A (en) | Bionic micropore diameter bores expansion formula underground mole | |
| CN107476301A (en) | A kind of full casing follow-up step construction method of bridge pile foundation | |
| CN114035239B (en) | Comprehensive investigation method for deep-buried long tunnel | |
| CN107002466A (en) | Drill string equipment, method and system with integrated annular barrier and ported sub | |
| CN102747952B (en) | Hydraulic walking type percussion reverse circulation slot repairing machine | |
| CN110529136A (en) | Municipal blow-off line pipe jacking construction method | |
| CN105064922B (en) | A kind of reaming bit for abrasion drill | |
| CN206625788U (en) | Reducing rotary drill tools | |
| CN106223887A (en) | A kind of portable sampling equipment used for geological prospecting | |
| CN105626082B (en) | A kind of construction of underground tunnel equipment | |
| CN108571333A (en) | A kind of city underground section soft soil tunnel mechanization full face tunneling method | |
| CN103306608B (en) | Drill bit and rig | |
| CN106812471A (en) | Reducing rotary drill tools and construction method | |
| CN107762400B (en) | Underground engineering hole pile driving construction is with moving forward and backward formula low clearance drilling machine | |
| CN206309279U (en) | Radiating aperture guide digging equipment | |
| CN107091053B (en) | Underground engineering pile foundation pore-forming left and right displacement formula low clearance drilling machine | |
| CN208310757U (en) | A kind of rich water weak soil, the artificial bore detecting device of thin silt ultra-deep pipeline | |
| CN107762404A (en) | Swing offset formula low clearance rig | |
| CN116291471A (en) | Construction method and tunneling equipment for large-diameter vertical shaft of upper soft and lower hard stratum | |
| CN107762406B (en) | Underground engineering hole pile driving construction swing offset formula low clearance drilling machine | |
| CN105840206A (en) | Cutter head frame for tunnel digging machine | |
| CN107762403B (en) | Underground engineering hole pile driving construction left and right displacement formula low clearance drilling machine | |
| CN107386963B (en) | A kind of rotary digging bored concrete pile meets big partial size cobble drilling construction method and embraces stone bucket and bores | |
| CN107762405B (en) | Underground engineering hole pile driving construction is with moving forward and backward formula low clearance drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200901 Address after: Unit 1806, unit 3, building 1, yard A2, Xiaotun Road, Fengtai District, Beijing 100040 Patentee after: Xiao Shourang Address before: 471003 No. 21 Gou Gou Industrial Park, hi tech Development Zone, Henan, Luoyang Patentee before: LUOYANG WUXUAN HEAVY INDUSTRY MACHINERY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 471003, Henan, Jianxi District, Luoyang Li Chun West Road, Zhongtai century Huacheng 1 8-2-302 Patentee after: Xiao Shourang Address before: Unit 1806, unit 3, building 1, yard A2, Xiaotun Road, Fengtai District, Beijing 100040 Patentee before: Xiao Shourang |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 |